CVE-2025-55583

Description

D-Link DIR-868L B1 router firmware version FW2.05WWB02 contains an unauthenticated OS command injection vulnerability in the fileaccess.cgi component. The endpoint /dws/api/UploadFile accepts a pre_api_arg parameter that is passed directly to system-level shell execution functions without sanitization or authentication. Remote attackers can exploit this to execute arbitrary commands as root via crafted HTTP requests.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-78 OS Command Injection

CWE-306 Missing Authentication

CWE-668 CWE-668

Affected Products

Vendor	Product	Versions
dlink	dir-868l_firmware	All
dlink	dir-868l	All

References

Exploits

https://cybermaya.in/posts/Post-44/ https://cybermaya.in/posts/Post-44/

Other References

https://supportannouncement.us.dlink.com/security/publication.aspx?name=SAP10397 https://www.dlink.com/en/security-bulletin/

Frequently Asked Questions

What is CVE-2025-55583? +

D-Link DIR-868L B1 router firmware version FW2.05WWB02 contains an unauthenticated OS command injection vulnerability in the fileaccess.cgi component. The endpoint /dws/api/UploadFile accepts a pre_api_arg parameter that is passed directly to system-level shell execution functions without sanitization or authentication. Remote attackers can exploit this to execute arbitrary commands as root via crafted HTTP requests. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-55583? +

CVE-2025-55583 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-55583? +

CVE-2025-55583 affects products from dlink, specifically: dir-868l, dir-868l_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55583? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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